Rather than reference the ABYC it might be more useful to to look to research on removing water in an emergency.
When considering "dewatering" you might check the ORC Cat. 1 recommendations. These discuss everything from size (thru put) of cockpit drains to strength of hatch boards. And a lot more.
Our boat was built for ocean sailing by Ericson Yachts, and they installed a large ($) manual pump in the cockpit for all of their boats starting sometime in the 80's.
I have renewed it once along with all the hoses. Along with our two electric Jabsco pumps, the hope is that we can remove water fast enough to find and staunch a major leak before we sink. Or, at least slow down the accumulation while we find the leak source.
ORC Cat. 1 presumes (hopes) that there is enough crew aboard to have one or more assigned to damage control (as it was called in my Navy days) while the other person drives and pumps. And, as long as the engine can operate and make more amps, our electric pumps will remove water.
All theoretical, but still, the more you plan ahead, the more likely you are to survive...